CVE-2018-7169
Description
An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used group blacklisting (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.
Risk Information
Base Score
5.3
MODERATE
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
EPSS Score
Exploitation Probability
0.196
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| SUSE-SU-2018:0662-1(SUSE Linux Enterprise Desktop 12-SP2 ) shadow-4.2.1-27.6.1.x86_64.rpm | Linux |
| SUSE-SU-2018:0662-1(SUSE Linux Enterprise Desktop 12-SP2 ) shadow-debuginfo-4.2.1-27.6.1.x86_64.rpm | Linux |
| SUSE-SU-2018:0662-1(SUSE Linux Enterprise Desktop 12-SP2 ) shadow-debugsource-4.2.1-27.6.1.x86_64.rpm | Linux |
| system login tools (USN-5254-1) login_4.5-1ubuntu2.2_i386.deb | Linux |
| system login tools (USN-5254-1) login_4.5-1ubuntu2.2_amd64.deb | Linux |
| system login tools (USN-5254-1) passwd_4.5-1ubuntu2.2_i386.deb | Linux |
| system login tools (USN-5254-1) passwd_4.5-1ubuntu2.2_amd64.deb | Linux |
| system login tools (USN-5254-1) uidmap_4.5-1ubuntu2.2_i386.deb | Linux |
| system login tools (USN-5254-1) uidmap_4.5-1ubuntu2.2_amd64.deb | Linux |
Patch Details
No records foundReferences
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234